Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produces normal pollen tube because ;–
Even after killing the generative cell with a laser beam, the pollen grain of a flowering plant germinates and produces normal pollen tube because ;–
[a] laser beam stimulates pollen germination and pollen tube growth
[b] the laser beam does not damage the region from which pollen tube emerges
[c] the contents of killed generative cell permits germination and pollen tube growth
[d] the vegetative cells has not been damaged
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